Camp Muir

Camp Muir, named for the naturalist John Muir, is a high-altitude refuge for climbers in Mount Rainier National Park in Washington, accessed through the Paradise Entrance. The shelters comprising the camp are situated at a 10,188 ft elevation between the Muir Snowfield and the Cowlitz Glacier on Mount Rainier. Camp Muir is the most-used high camp for those attempting to climb to the mountain's summit. Camp Muir is between the Nisqually and Paradise Glaciers.

The larger "public" shelter hut was built in 1921 to plans supervised by Daniel Ray Hull of the National Park Service. The 12-foot by 25-foot single-story one-room shelter was initially constructed of dry-laid stone. It replaced a smaller shelter which was used as a shelter for climbing guides.

Source: Wikipedia